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Im thinking of tackling some winter projects and wanted to know if there's an exact procedure to follow to connect a temp gauge? The old sensor is plugged into my new rpm air gap but its not connected to anything. Previously in the torker intake the mechanic was saying that it was giving incorrect readings so I went and bought a new sensor. How would I go about connecting it to the temp gauge?
Im thinking of tackling some winter projects and wanted to know if there's an exact procedure to follow to connect a temp gauge? The old sensor is plugged into my new rpm air gap but its not connected to anything. Previously in the torker intake the mechanic was saying that it was giving incorrect readings so I went and bought a new sensor. How would I go about connecting it to the temp gauge?
The Chev. Sensors and Gauges are pairs based on Model Year (I can't tell you what years use which Sensor), the best way to determine if the Sensor/Gauge are working correctly is to put the Sensor in boiling Water. You'll need to add a ground wire to the body of the Sensor (unless it's a two wire Sensor) as the older stock Sensors ground via the body threads. I had to move my sensor (BB with AFR Heads) to the water passage on the Manifold and it seems to be accurate (I have a second Sensor for electric Fan control and it's turning Fan on/off correctly within the Range the Factory Gauge is indicating). As far as on Car hookup the AIM has a Wiring Diagram, one of the Forum Members has PDF versions of most years AIM.
On a 1968 Corvette, that's what your profile says, the sender would be in the drivers side cylinder head between cylinders 1 and 3. The wire going to the factory temperature gauge would be there maybe part of the same harness going to the alternator,
Yes I did but what I meant this time is where’s the actual wire that connects to the sensor from the harness. I couldn’t find any extra wire that goes to the sensor
You have to clarify what year the car is and what engine it had from the factory, your profile states 1968, so as I stated in post #3 above the factory wire was on the drivers side connecting to a sender located on the cylinder head.
Yes it is a 68 with a 350 and initially I do recall the sensor being somewhere on the driver side and the wire went to a cluster near that black square box mounted on the side.
since then the car has new heads and intake so now it’s on the front of the rpm air gap but I can’t seem to find the factory wire that should connect to it
It's a DARK GREEN lead. The sensor is grounded to the block. It is a single connector on the green lead and plugs right onto the temp sensor electrical end.
See below:
Originally Posted by titanle
Yes it is a 68 with a 350 and initially I do recall the sensor being somewhere on the driver side and the wire went to a cluster near that black square box mounted on the side.
since then the car has new heads and intake so now it’s on the front of the rpm air gap but I can’t seem to find the factory wire that should connect to it
Last edited by carriljc; Nov 10, 2019 at 01:21 PM.
installing temp sensor
